2399042 has 4 divisors (see below), whose sum is σ = 3598566. Its totient is φ = 1199520.

The previous prime is 2399041. The next prime is 2399081. The reversal of 2399042 is 2409932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2157961 + 241081 = 1469^2 + 491^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2398996 and 2399014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2399041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599759 + ... + 599762.

2^2399042 is an apocalyptic number.

2399042 is a deficient number, since it is larger than the sum of its proper divisors (1199524).

2399042 is a wasteful number, since it uses less digits than its factorization.

2399042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199523.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 2399042 is about 1548.8841144514. The cubic root of 2399042 is about 133.8687732910.

The spelling of 2399042 in words is "two million, three hundred ninety-nine thousand, forty-two".